stm32mp: remove redundant SYS_TEXT_BASE prompt

The main prompt for this (defined in /Kconfig) is visible at all times,
which means there's no reason to have an additional, machine-specific
prompt to set the same option.

Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig
index ae28f6e..bf8a18a 100644
--- a/arch/arm/mach-stm32mp/Kconfig
+++ b/arch/arm/mach-stm32mp/Kconfig
@@ -80,12 +80,7 @@
 		OP-TEE monitor provides ST SMC to access to secure resources
 
 config SYS_TEXT_BASE
-	prompt "U-Boot base address"
 	default 0xC0100000
-	help
-		configure the U-Boot base address
-		when DDR driver is used:
-		  DDR + 1MB (0xC0100000)
 
 config NR_DRAM_BANKS
 	default 1